Burning Blood

Your blood begins to bubble and boil, purging your body of weakness. You immediately take 1d4 points of acid damage. If you are poisoned, you neutralize the poison. If you are afflicted by more than one poison, you neutralize one poison that you know is present, or you neutralize one at random.

For the duration, you have advantage on saving throws against being poisoned, and you have resistance to poison damage. In addition, whenever another creature bites you or ingests your blood by any means, they take 4d6 points of acid damage.